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JEE Main levelSingle correct optionDifficulty 2 of 3nm140

Propene and cyclopropane () show

  1. Aposition isomerism
  2. Bring-chain isomerism
  3. Cmetamerism
  4. Dchain isomerism

Answer: B

They have the same formula , but one has an open chain with a C=C bond and the other is a ring. Isomerism between an open-chain and a cyclic structure is called ring-chain isomerism.
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